Thread tape, thread sealant, or ????

[wendol]

i'm replacing my original Teejet Control Valve AA17L with a new one, and concerned about the best product to use for attaching the green leaf fittings.

I was about to purchase the Blue Monster Thread Seal Tape, but just not sure if that's what is needed.

I need to make sure I use the correct product to prevent any leaks....so......looking for suggestions based on your experience. Thanks for any and all help!!

 

[GeoHorn]

RectorSeal or Permatex No. 2.

Thread tape can cause troubles in some applications, notably in fuel systems where a small filament can be cut-loose during installation and drift into sensitive and small orifices.

 

[TheOldHokie]

i'm replacing my original Teejet Control Valve AA17L with a new one, and concerned about the best product to use for attaching the green leaf fittings.

I was about to purchase the Blue Monster Thread Seal Tape, but just not sure if that's what is needed.

I need to make sure I use the correct product to prevent any leaks....so......looking for suggestions based on your experience. Thanks for any and all help!!

Its a water pipe - just about any thread sealant. On something that mundane I would opt for any brand of PTFE tape from my local box store.

Dan

 

[DONLI]

RectorSeal or Permatex No. 2.

Thread tape can cause troubles in some applications, notably in fuel systems where a small filament can be cut-loose during installation and drift into sensitive and small orifices.

I agree tape could cause a problem with pluging things up!!
Just my 2c.

Don

 

[TheOldHokie]

I agree tape could cause a problem with pluging things up!!
Just my 2c.

Don

About as much chance of that as the faucet on your kitchen sink .

Dan

 

[John T]

i'm replacing my original Teejet Control Valve AA17L with a new one, and concerned about the best product to use for attaching the green leaf fittings.

I was about to purchase the Blue Monster Thread Seal Tape, but just not sure if that's what is needed.

I need to make sure I use the correct product to prevent any leaks....so......looking for suggestions based on your experience. Thanks for any and all help!!

Blue monster is good. Rectorseal#5 is my choice for just about everything.
Teflon tape WILL work also.... but personally I find it to be a pain in the arse to deal with.

Oh and no offense to whoever mentioned it but Permatex #2 is absolutely the wrong choice for a water valve.
Perm.#2 is a great product for a motorcycle gas petcock or an oil fitting... But not water.

 

[Old Machinist]

I recently did battle with some china pipe threads and found the Blue Monster thread sealer to be the solution for me. I also had to chase the the threads both male and female. Some the tap and die went in and on smooth and some took a couple turns near the end to straighten.

I used Aviation Permatex on gas and oil fittings for years with no leaks. It was no match for the inferior pipe thread fittings I encountered on my last project.

 

[John T]

I agree tape could cause a problem with pluging things up!!
Just my 2c.

Don

Umm... the sealant goes on the THREADS.

With proper use, It's FINE.

 

[McMXi]

i'm replacing my original Teejet Control Valve AA17L with a new one, and concerned about the best product to use for attaching the green leaf fittings.

I was about to purchase the Blue Monster Thread Seal Tape, but just not sure if that's what is needed.

I need to make sure I use the correct product to prevent any leaks....so......looking for suggestions based on your experience. Thanks for any and all help!!

My boom sprayer has some form of paste sealant on all the pipe fittings. It doesn't take much to plug up the nozzles given how fine the tips are, so I'd use some kind of PTFE paste sealant rather than tape. I ordered the stuff shown below (will be here tomorrow) for the BSPP/NPTF to Summit Hydraulic 1/2" Ag couplers.

 

[DONLI]

About as much chance of that as the faucet on your kitchen sink .

Dan

I spent 3 yrs in the Army repairing aircraft hyds. and there was noway I would use tape on any hyd system.
Also worked the last 10 yrs before retirment repairing hyd components and found small pcs. of tape in valves, restrictors, etc.
To each his own, do as you wish!

Don

 

[TheOldHokie]

I spent 3 yrs in the Army repairing aircraft hyds. and there was noway I would use tape on any hyd system.
Also worked the last 10 yrs before retirment repairing hyd components and found small pcs. of tape in valves, restrictors, etc.
To each his own, do as you wish!

Don

This is not an aviation hydraulic system. It is a 100 PSI water line on a low end agricultural sprayer. PTFE tape is used in millions of residential and commercial plumbing installations every year.

This is Chicken Little hysteria.

Dan

 

[Russell King]

I spent 3 yrs in the Army repairing aircraft hyds. and there was noway I would use tape on any hyd system.
Also worked the last 10 yrs before retirment repairing hyd components and found small pcs. of tape in valves, restrictors, etc.
To each his own, do as you wish!

Don

the valve in question seems to be for a sprayer not any hydraulic system. That is why there seems to be less concern with using tape.

BUT (and as PeeWee Herman said - everyone has a big BUT…) on a plastic fitting I don’t use tape nor do I use a teflon based thread sealant. Both can lead to splitting the female port by over tightening it. See this article if you want.

https://www.fluoramics.com/dos-and-donts-of-assembling-threaded-plastic-fittings/04/

I recommend something like Swagelok PTFE free sealant or Gasoila -NT.

But it probably won’t matter in this situation what is used, just don’t crank on it very hard.

 

[TheOldHokie]

the valve in question seems to be for a sprayer not any hydraulic system. That is why there seems to be less concern with using tape.

BUT (and as PeeWee Herman said - everyone has a big BUT…) on a plastic fitting I don’t use tape nor do I use a teflon based thread sealant. Both can lead to splitting the female port by over tightening it. See this article if you want.

https://www.fluoramics.com/dos-and-donts-of-assembling-threaded-plastic-fittings/04/

I recommend something like Swagelok PTFE free sealant or Gasoila -NT.

But it probably won’t matter in this situation what is used, just don’t crank on it very hard.

You cant fix stupid Russell.

Dan

 

[wendol]

the valve in question seems to be for a sprayer not any hydraulic system. That is why there seems to be less concern with using tape.

BUT (and as PeeWee Herman said - everyone has a big BUT…) on a plastic fitting I don’t use tape nor do I use a teflon based thread sealant. Both can lead to splitting the female port by over tightening it. See this article if you want.

https://www.fluoramics.com/dos-and-donts-of-assembling-threaded-plastic-fittings/04/

I recommend something like Swagelok PTFE free sealant or Gasoila -NT.

But it probably won’t matter in this situation what is used, just don’t crank on it very hard.

Not so sure if I should be concerned about splitting the female port, as all of these fittings are male polypropylene fittings.......tightening into female cast aluminum housing.

 

[TheOldHokie]

Not so sure if I should be concerned about splitting the female port, as all of these fittings are male polypropylene fittings.......tightening into female cast aluminum housing.

You should not be cincerned about anything. This whole discussion is a total

 

[MapleLeafFarmer]

if I am understanding right you have stainless valve threads to either nylon or polypropylene fittings likely to carry caustic ag. chemicals??

We use RectorSeal T+2. Its safe of stainless/poly/nylon and rated for use with ag. chemicals.

 

[GreensvilleJay]

the valve in question seems to be for a sprayer not any hydraulic system. That is why there seems to be less concern with using tape.

BUT (and as PeeWee Herman said - everyone has a big BUT…) on a plastic fitting I don’t use tape nor do I use a teflon based thread sealant. Both can lead to splitting the female port by over tightening it. See this article if you want.

https://www.fluoramics.com/dos-and-donts-of-assembling-threaded-plastic-fittings/04/

I recommend something like Swagelok PTFE free sealant or Gasoila -NT.

But it probably won’t matter in this situation what is used, just don’t crank on it very hard.

I used 1,000s of Swagelok fittings over an 11 year stint st STELCO, never ever had one fail. Their telfon tape was about 5x thicker than the stuff you see today.

 

[TheOldHokie]

if I am understanding right you have stainless valve threads to either nylon or polypropylene fittings likely to carry caustic ag. chemicals??

We use RectorSeal T+2. Its safe of stainless/poly/nylon and rated for use with ag. chemicals.

I am sure that works wonderfully but it would be the tape haters worst nightmare on steroids

RectorSeal T Plus 2 is a non-hardening thread sealant containing PTFE plus synthetic fibers. Fibers dispersed in a resinous base combined with inert mineral fillers provide maximum sealing performance.